code: def is_current_price(self):
      now = time_msecs()
      return now >= self.effective_start_date and (
          self.effective_end_date is None
          or now <= self.effective_end_date
      )
  
file_path: hail/batch/batch/driver/pricing.py
imports: import abc
  from typing import Optional
  from hailtop.utils import time_msecs
label_desc: Use image node_id 2 for calling the Price obj's underlying member method code with example usage: obj.is_current_price() and returns: unknown